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b. 149

composition: Op. 22, Polonaise

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There is no  lowering G to G at the beginning of the bar in FE (→EE1). This mistake, if committed by Chopin, would prove his anticipatory thinking – modulation to the key of B minor/G major was already determined in the previous bar, hence the use of G could have already been considered obvious (in FE the spaces between the notes suggest that the  before g and maybe even all 3 L.H. flats were added at the time of proofreading). The accidental was added in the remaining editions. 

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , GE revisions , Omission of current key accidentals , Errors repeated in EE

b. 150

composition: Op. 22, Polonaise

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FE are lacking in the  before the 1st L.H. quaver. The patent mistake was corrected in the remaining editions.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Errors in FE , GE revisions , Omission of current key accidentals

b. 150

composition: Op. 22, Polonaise

..

The flats in the second R.H. figure were added only in EE.

category imprint: Interpretations within context; Differences between sources

issues: EE revisions , Accidentals in different octaves

b. 152

composition: Op. 22, Polonaise

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In FE, there are no naturals before the bottom voice d1/2/3 notes. The last one is absolutely necessary; in spite of that, it was not added in any of the subsequent editions, in which the additions were limited to a  before d1 at the beginning of the bar. Moreover, FE (→GE) are lacking in the  before c3 in the 2nd figure; the accidental was added in EE. Significantly, the previous note, d3, is preceded with a , which was apparently understood as a cautionary accidental due to the d notes in the bottom voice and in the L.H. 

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: EE revisions , Accidentals in different octaves , Inaccuracies in FE , GE revisions , Cautionary accidentals , Errors repeated in GE , Errors repeated in EE

b. 153

composition: Op. 22, Polonaise

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In the main text we add a cautionary  before g3.

category imprint: Editorial revisions